3²x-¹ =81²x-⁴ ,x adalah?

3²x-¹ =81²x-⁴ ,x adalah?

Penjelasan dengan langkah-langkah:

~ Eksponensial

${3}^{2x - 1} = {81}^{2x - 4}$

${3}^{2x - 1} = ( {3}^{4} ) {}^{2x - 4}$

${3}^{2x - 1} = {3}^{8x - 16}$

$2x - 1 = 8x - 16$

$2x - 8x = - 16 + 1$

$- 6x = - 15$

$x = frac{ - 15}{ - 6}$

$x = frac{15}{6}$

$x = frac{5}{2} = 2 frac{1}{2}$

semoga membantu